I have the multibit client 0.4.23.  Backups good and private key in safe place.  I have only one bitcoin wallet on there.
I'd like to upgrade to the new wallet, but cannot seem to find specific upgrade instructions for windows anywhere.  Don't wanna mess up, 'cause I probably cannot fix up.  Kindly show me toward upgrade instructions, or I am a quick study - and just tell me how you've upgraded.
Thanks.